another positional argument error (...and executing objects stored in a list)

[ichabod801]

I'm not sure if this is the issue, but when you create the Circle or Rectangle classes, you store the details of the shape in various values: self.__startX, self.startY, and so on. But then when you draw them, you require the values to be passed to the draw method as parameters. I would just use the values you already stored. So line 22 of the rectangle class is turtle.goto(__startX, __startY). I would remove __startX and __startY from the parameter list of draw, and instead use turtle.goto(self.__startX, self.__startY). Then do the same for all of the other variables used in the draw method.